alibaba/easyexcel

导出excel,导出数据字段24个,数据有100000行,耗时27秒,能不能优化减少耗时

Open

#3 495 ouverte le 12 oct. 2023

Voir sur GitHub
 (1 commentaire) (0 réactions) (0 assignés)Java (7 599 forks)batch import
help wanted

Métriques du dépôt

Stars
 (33 728 stars)
Métriques de merge PR
 (Aucune PR mergée en 30 j)

Description

String fileName ="D:\test.xlsx"; ExcelWriter excelWriter = EasyExcel.write(fileName,TestVo.class).excelType(ExcelTypeEnum.XLSX) .inMemory(false) .autoCloseStream(false) .build(); List objects = new ArrayList(); for (int i = 0; i < 110000; i++) { TestVo testVo = new TestVo(); testVo.setSapCustomerCode(System.currentTimeMillis()+""+i); testVo.setOrderGoodsDtlId("名字"); objects.add(testVo); } List<List> testVoLists = Lists.partition(objects, 110000).stream().map(ArrayList::new).collect(Collectors.toList());

    ForkJoinPool forkJoinPool = new ForkJoinPool(100, TtlForkJoinPoolHelper.getDefaultDisableInheritableForkJoinWorkerThreadFactory(), null, false);
    forkJoinPool.submit(TtlRunnable.get(() -> testVoLists.parallelStream().forEach(m -> {
            WriteSheet writeSheet = EasyExcel.writerSheet(0, "名字").head(TestVo.class)
                    .registerWriteHandler(new CustomCellWriteHandler()).registerWriteHandler(EasyExcelUtil.getStyleStrategy())
                    .build();
            //写数据
            WriteTable writeTable = new WriteTable();
            excelWriter.write(m, writeSheet,writeTable);
    }))).join();
    excelWriter.finish();

Guide contributeur